I used the GetListItems web service from SharePoint to create a data
source in Front Page. One of the fields is formatted as a picture and
is called ows_photo. The format of the data in that field appears to
be url, description.. How do I parse the content and then display it
as a picture?

The original code when inserted into a dataview:
<td class="ms-vb" height="42"><xsl:value-of
select="@ows_Photo"/></td>
and appears like this:
http://thechannel/_layouts/images/no_pic.gif,
http://thechannel/_layouts/lzcustom/images/employeephotos/SACON.jpg

I parsed it like this:
<td class="ms-vb" height="42"><a><xsl:variable name="linktext"
select="@ows_Photo"/><xsl:attribute name="href"><xsl:value-of
xmlns:xsl="http://www.w3.org/1999/XSL/Transform" select="substring-
after($linktext,', ')"/></xsl:attribute><xsl:value-of
select="substring-before($linktext,', ')"/></a></td>
and it appears like this:
http://thechannel/_layouts/images/no_pic.gif

When I try to format it as a picture, I get an error message:
FrontPage cannot reender the XSLT in this data view.
Failed setting processor stylesheet:0x80004005: A reference to
variable or parameter 'linktext' cannot be resolved. The variable or
parameter may not be defined, or it may not be in scope.